There was a download of Nidhogg 9.0 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This tool was originally developed by Messhof LLC. The program relates to Games. We recommend checking the downloaded files with any free antivirus.
From the developer:
Nidhogg is the epic award-winning fencing tug-of-war, full of graceful acrobatics and clumsy stabs. IRL yelling and excitement may occur, in this ultimate two-player showdown of fast-paced fencing and melee attacks. Beware, advantages in Nidhogg are often fleeting, as new opponents continually spawn.
You may want to check out more software, such as Chaos Pack for Pocket Tanks Deluxe, PREY or Warsow, which might be similar to Nidhogg.